1245324320540 has 12 divisors (see below), whose sum is σ = 2615181073176. Its totient is φ = 498129728208.

The previous prime is 1245324320483. The next prime is 1245324320543. The reversal of 1245324320540 is 450234235421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1245324320540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245324320543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31133107994 + ... + 31133108033.

It is an arithmetic number, because the mean of its divisors is an integer number (217931756098).

Almost surely, 2^{1245324320540} is an apocalyptic number.

1245324320540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245324320540 is an abundant number, since it is smaller than the sum of its proper divisors (1369856752636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245324320540 is a wasteful number, since it uses less digits than its factorization.

1245324320540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62266216036 (or 62266216034 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 1245324320540 its reverse (450234235421), we get a palindrome (1695558555961).

The spelling of 1245324320540 in words is "one trillion, two hundred forty-five billion, three hundred twenty-four million, three hundred twenty thousand, five hundred forty".